Compound Actuating Tool Integrated Geared Teeth Leverage

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Solution Overview

Problem

Conventional compound actuating tools, such as pliers, often require separate geared mechanisms attached to handles or jaws, which complicates manufacturing and may not efficiently multiply force.

Innovation Solution

Integration of two sets of geared teeth directly into the handles and jaws of pliers, along with a biasing element, allows for a compound leverage system that increases the force exerted by interfacing surfaces when gripping, eliminating the need for a separate pawl and simplifying manufacturing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If a separate geared mechanism (e.g., pawl) is attached to handles or jaws, then force multiplication is achieved, but device complexity increases and manufacturing becomes more difficult

Engineering Contradiction:
Improveforce multiplicationVSAvoiddevice complexity
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The patent integrates the geared teeth directly into the handles and jaws, merging the force multiplication mechanism with the structural components. This eliminates the need for a separate pawl and reduces device complexity while maintaining the compound leverage effect.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The handles and jaws serve dual functions: as structural components and as the geared mechanism itself. The teeth integrated into these components perform both structural support and force multiplication, reducing the number of separate parts needed.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Force

If a separate geared mechanism (e.g., pawl) is attached to handles or jaws, then force multiplication is achieved, but manufacturing complexity increases

Engineering Contradiction:
Improveforce multiplicationVSAvoidease of manufacture
Core Design Contradiction:
ForceVSEase of manufacture

Solution Approach 1:

By combining the geared teeth with the handles and jaws into integrated components, the patent reduces the number of separate parts that need to be manufactured and assembled. This simplifies manufacturing processes and reduces assembly steps while maintaining the force multiplication capability.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If geared teeth are integrated into handles and jaws, then device complexity is reduced and manufacturing is simplified, but force multiplication efficiency may be compromised

Engineering Contradiction:
Improvedevice complexityVSAvoidforce multiplication
Core Design Contradiction:
Device complexityVSForce

Solution Approach 1:

The integration of geared teeth into the handles and jaws maintains the compound leverage system's force multiplication capability. The first set of teeth on the first jaw and the second set of teeth on the second jaw work together to provide mechanical advantage, ensuring efficient force multiplication.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The integrated teeth system in pliers provides similar force-multiplying effects to conventional designs while being easier to manufacture, enhancing the efficiency and usability of the actuating tool.

Implementation Method 1

a biasing element coupled to the second component and the second jaw such that the second jaw is moved with the second component

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

two sets of geared teeth are integrated into the handles and/or jaws

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Implementation Method 3

the first plurality of teeth engage the second plurality of teeth

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP4360806A1Compound actuating tool
Publication Date: 2024.05.01 MILWAUKEE ELECTRIC TOOL CORP
  • EP4360806A1 patent drawingFigure 1~2
  • EP4360806A1 patent drawingFigure 3~4
  • EP4360806A1 patent drawingFigure 5~7

AI summary

A clamping tool, such as pliers, is provided. The clamping tool includes a pair of components coupled to a pair of jaws. The first component and the first jaw include a first set of teeth that engage with a second set of teeth included in the second component and second jaw. The engagement between the teeth provide a compound leverage system.